Great Northern Railway Historical Society Blueprint Collection JSBP0743, Butte, Montana, undated. Great Northern Blueprint Number 04.08.10, Interlocking. Track Plan. Authorization for Expenditure 5098. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.

Great Northern Railway Historical Society Blueprint Collection JSBP0744, Butte, Montana, undated. Great Northern Blueprint Number 91, Fuel, Oil Shed, and Privy. For Interlocking Plant. Authorization for Expenditure 5098. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.

Great Northern Railway Historical Society Blueprint Collection JSBP0745, Butte, Montana, undated. Interlocking. Place Car Body. Authorization for Expenditure 5098. Interstate Commerce Commission Account Number 27, Signals and Interlockers. Other ICC account descriptions: ICC Account Number 27, Interlocking.

Great Northern Blueprint Number 1240-34-18, Great Northern Talbot Street Crossing, undated. Other subject categories: Drawing

Great Northern Blueprint Number 1240-34-17, Great Northern Talbot Street Crossing, undated. Other subject categories: Drawing

Great Northern Blueprint Number 1240-34-11, Great Northern Summit Valley Railway Crossing, undated. Other subject categories: Drawing